Núñez Cabeza de Vaca, Alvar, active 16th century & Bandelier, Adolph Francis Alphonse, 1840-1914. The Journey of Alvar Nuñez Cabeza de Vaca and His Companions From Florida to the Pacific, 1528-1536, book, 1922; (https://texashistory.unt.edu/ark:/67531/metapth3001/m1/1/: accessed August 20, 2018), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .